Patents by Inventor Syuji Sakata

Syuji Sakata has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Cell flow synchronization establishing system of wireless ATM access system
    Patent number: 6839329
    Abstract: A cell flow synchronization establishing system of an ATM access system, capable of establishing synchronization of cell flow between a mobile station and base stations at the time of hand-off process, is provided. First buffer control unit is provided in the ATM switching station, and second buffer control unit is provided in the mobile station. The first buffer control unit reproduces cell stream to be transmitted by guaranteeing orderness of ATM cell between the first buffer control unit and the second buffer control unit and buffer clear processing is carried out based on predetermined synchronization establishment processing sequence before and after occurrence of handoff.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: January 4, 2005
    Assignee: NEC Corporation
    Inventors: Hiroyuki Sato, Yasukazu Murata, Syuji Sakata, Satoru Yamano